Range walk and array rotation in space-time adaptive processing: effects and compensations |
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| Authors: | Jinping Sun Guohua Wang Shiyi Mao |
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| Affiliation: | 1. School of Electronic and Information Engineering, Beihang University, Beijing 100191, P. R. China
2. School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue 639798, Singapore |
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| Abstract: | This paper proposes a unified clutter model incorporating the effects of range walk and array rotation for space-time adaptive processing (STAP) in airborne multi-channel early-warning radar. Based on this clutter model, STAP performance is then analyzed from the perspective of covariance matrix tapering (CMT). For STAP performance degradation due to array rotation, a determinate compensation method is proposed based on the CMT method. Numerical examples are provided to verify the analysis and the proposed compensation method. |
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| Keywords: | radar space-time adaptive processing clutter covariance matrix tapering |
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